TMI - no pic just question- amniotic fluid or discharge?

TMI

As I'm laying here on my couch I felt a small gush and felt, its wet only in my underwear and it was clear, no smell but there was the tiniest bit of white in there. I'm wondering if because it was the first bit there was potentially some discharge with it or if there should be no discharge at all? Sorry this has never happened 😐 if discharge increases and becomes this watery and it's normal for almost 36 weeks please let me know! I don't see my OB until Thursday.

Thank you in advance!